公开(公告)号：US20080304292A1

公开(公告)日：2008-12-11

申请号：US11758099

申请日：2007-06-05

申请人： QINGRONG ZENG ,  Tejinder Singh ,  Nicolae A. Morcov

发明人： QINGRONG ZENG ,  Tejinder Singh ,  Nicolae A. Morcov

IPC分类号： H02M3/335 ,  G05F1/00

CPC分类号： H02M3/285 ,  H02M3/33584

摘要： A bi-directional dc-dc converter is provided that may provide voltage conversion for two separate electrical power systems. The two electrical power systems may have different functions, electrical requirements and power transfer directions. The bi-directional dc-dc converter may include back-to-back bi-directional dc-dc converter circuits isolated from each other by a transformer. Multiple such dc-dc converters may be connected in parallel to increase power capability. Phase shift pulse width modulation (PWM) may be used to switch the parallel dc-dc converters so as to decrease both voltage ripple and current ripple. The number of dc-dc converters may be modified to meet the different needs of various electric power systems. A single bi-directional dc-dc converter of the invention may be employed to provide electric power conversion for multiple electric power systems, even where those systems have different power requirements and different power transfer directions.

摘要翻译： 提供了可以为两个单独的电力系统提供电压转换的双向dc-dc转换器。 两个电力系统可能具有不同的功能，电气要求和电力传输方向。 双向dc-dc转换器可以包括由变压器彼此隔离的背对背双向dc-dc转换器电路。 多个这样的dc-dc转换器可以并联连接以增加功率能力。 可以使用相移脉冲宽度调制（PWM）来切换并联dc-dc转换器，以减小电压纹波和电流纹波。 可以修改dc-dc转换器的数量以满足各种电力系统的不同需求。 本发明的单个双向dc-dc转换器可用于为多个电力系统提供电力转换，即使那些系统具有不同的功率要求和不同的功率传输方向。